Hydraulic lifter

Abstract

The invention relates to a hydraulic lifter comprising a base, a lifting mechanism, a working platform and an electrohydraulic controlling mechanism. The lifting mechanism is provided with a multistage telescopic oil cylinder; the working platform is arranged on the top of the lifting mechanism; and the electrohydraulic controlling mechanism is used for driving the lifting mechanism. The hydrauliclifter is characterized in that the base is provided with a balancing device used for keeping the base horizontal; the balancing device comprises at least three base balancing oil cylinders which arefixed on the balancing device; the sleeves of the base balancing oil cylinders are fixedly arranged on the base; and piston rods of the base balancing oil cylinders are arranged towards the ground. The balancing device can be in two working states. When the balancing device is in the first working state, the piston rods of all the base balancing oil cylinders tough the ground, and the base leavesthe ground. When the balancing device is in the second working state, the base touches the ground, and the piston rods of all the base balancing oil cylinders are folded in the sleeves of the base balancing oil cylinders. Because the base balancing oil cylinders of the invention can support the base, the unbalanced loading of the hydraulic lifter, which is resulted from the uneven construction ground, can be avoided.

Description

technical field [0001] The invention relates to a hydraulic lift. Background technique [0002] Existing hydraulic lifts generally include a base, a lifting mechanism, an operating platform, an electro-hydraulic control mechanism, and an anti-overturn support mechanism arranged on the base. The lifting mechanism generally includes an oil cylinder outer casing, and a multi-stage telescopic oil cylinder arranged in the oil cylinder outer casing, and the multi-stage telescopic oil cylinder is composed of a plurality of intermediate cylinder sleeves that are respectively socketed together. The electro-hydraulic control mechanism enters the oil into the lower end of the multi-stage telescopic oil cylinder through the oil filter, electromagnetic reversing valve, throttle valve, and hydraulic control check valve, so that the telescopic oil cylinder extends step by step from coarse to fine, thereby pushing the operating platform rise. However, it is often difficult to ensure the l...

AI Technical Summary

Problems solved by technology

However, it is often difficult to ensure the level of the work site, so the base of the lift is affected by the terrain and cannot maintain balance, resulting in the lift being unable to work, or the lifting mechanism of the lift is tilted upward when extending, which will not only affect the smooth deployment of the telescopic cylinder, but also cause long-term deviation in the lifting mechanism. If the environment is planted, it will also damage the multi-stage telescopic oil cylinder, resulting in shortened life of the telescopic oil cylinder. In addition, the inclination of the entire lift is not conducive to the climbing and working of the operator.

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